The Crown Publishing Group announced Wednesday that Bush's memoir, "Decision Points," has sold more than 1.1 million copies. It was released Nov. 9.
More than 135,000 copies were sold as e-books.
Clinton's "My Life" and two Obama books, "The Audacity of Hope" and "Dreams from My Father," have also sold at least a million copies.
All three presidents were published by divisions of Random House Inc.
